2018 Thor Motor Coach ACE problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
5 owner complaints analyzed
3 distinct recall campaigns
1,300 mi median reported failure mileage
Scope: 2018 model year. Data snapshot: . 4 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Electrical System is the most frequently named component, appearing in 1 of 5 complaints (20.0%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Transmission and shifting | 1 | 20.0% |
| Electrical and battery issues | 1 | 20.0% |
| Steering behavior | 1 | 20.0% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Electrical System | 1 |
| Engine | 1 |
| Power Train:Automatic Transmission | 1 |
| Steering | 1 |
| Suspension:Front:Wheel Bearing | 1 |
| Visibility/Wiper | 1 |
Electrical System: 1; Engine: 1; Power Train:Automatic Transmission: 1; Steering: 1; Suspension:Front:Wheel Bearing: 1; Visibility/Wiper: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 4 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 4; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (4). 1 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2018 | 2 |
| 2019 | 1 |
| 2024 | 2 |
2018: 2; 2019: 1; 2024: 2
Pattern summary
Electrical System leads the component reports. Transmission and shifting appears in 1 complaint narratives. Electrical and battery issues appears in 1 complaint narratives. Steering behavior appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11580221 · 2024-03-30 (March 30, 2024)
Transmission down shifts excessively on downhill grades
Owner-reported narrative. Look up ODI 11580221 at NHTSA ↗
Owner report 11112225 · 2018-07-18 (July 18, 2018)
TL* THE CONTACT OWNS A 2018 THOR ACE. WHILE DRIVING VARIOUS SPEEDS, THE STEERING WHEEL WAS EXTREMELY LOOSE, THE AUXILIARY BATTERY OVERHEATED, AND THE VEHICLE DECELERATED. IN ADDITION, THE CHECK ENGINE WARNING INDICATOR ILLUMINATED. UPON OPENING THE HOOD, THE CONTACT NOTICED ACID EMERGING FROM THE AUXILIARY BATTERY. THE VEHICLE WAS TAKEN TO CAMPING WORLD OF ALBUQUERQUE (14303 CENTRAL AVE NW, ALBUQUERQUE, NM 8712[phone removed]) WHERE IT WAS DIAGNOSED THAT THE STABILIZER FOR THE FRONT AND REAR NEEDED TO BE REPLACED ALONG WITH THE AUXILIARY BATTER…
Owner-reported narrative. 2,300 miles reported. Look up ODI 11112225 at NHTSA ↗